1#!/usr/bin/perl 2 3# Copyright (C) Internet Systems Consortium, Inc. ("ISC") 4# 5# SPDX-License-Identifier: MPL-2.0 6# 7# This Source Code Form is subject to the terms of the Mozilla Public 8# License, v. 2.0. If a copy of the MPL was not distributed with this 9# file, you can obtain one at https://mozilla.org/MPL/2.0/. 10# 11# See the COPYRIGHT file distributed with this work for additional 12# information regarding copyright ownership. 13 14require 5.001; 15 16use IO::Socket::IP; 17 18foreach $addr (@ARGV) { 19 my $sock; 20 $sock = IO::Socket::IP->new(LocalAddr => $addr, 21 Domain => PF_INET6, 22 LocalPort => 0, 23 Proto => tcp) 24 or die "Can't bind : $@\n"; 25 close($sock); 26} 27